Gadgets to help a user exercise better, cook better, and even brush their teeth better are among the products to be unveiled at the world's largest electronics show.

More than 3,000 exhibitors from all over the world will show off their latest innovations and vie for attention from 152,000 industry attendees at the Consumer Electronics Show in Las Vegas, Nevada.

South Korean technology giant LG Electronics used its pre-show press conference to unveil a fitness wristband to monitor the user's heartbeat, calorie consumption and movement, as well as incoming phone calls and music controls.

The Lifeband Touch measures performance via fitness apps and touch enabled screen and can be teamed with earphones featuring sensor technology to measure blood flow signals from the inner part of the ear to measure heart rate and oxygen consumption.

Tim Alessi, director of new product development for home entertainment at LG told the packed press conference: "Sensors in the earphones track heart rate while you're listening to music and can provide audible updates on your heart rate and the progress of your workout. When used in conjunction with the Lifeband Touch it will also display heart rate information on the OLED display."

The company also showed off its new messaging service, Home Chat, which allows the user to tell their appliances what they need them to do with a single text message, be it switching off the oven or checking what is in the fridge at home while in the supermarket.

Also on display was a curved screen mobile phone and OLED television and a smart TV running the webOS operating system, making it easier for users to operate the television.

Technology heavyweights including Samsung, Panasonic and Sony will also unveil their latest innovations to the press before the show begins on Tuesday.

French company Kolibree gave journalists an early look at its smart toothbrush, which analyses brushing habits.

Billed as the world's first connected toothbrush, users can download a free app to connect to the brush via Bluetooth. Data from the brush is then automatically synched to the smartphone to tell whether they brushed for long enough and succeeded in cleaning the hard to reach parts of the teeth and gums.

Fellow French company Parrot grabbed attention with a miniature flying drone and a jumping robot that can be controlled with a smartphone or tablet.

The Jumping Sumo can spin and turn 90 degrees and jump up to three feet from the floor onto a table. It also boasts a built-in camera to watch its movements on the tablet or phone.

The MiniDrone features large wheels that allow it to roll on the floor while the rotors allow it to drive up walls and along the ceiling.